Add support for latency measurement to Telemetry smoothness benchmarks.

content/browser/renderer_host/render_widget_host_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <deque>
 #include <list>
 #include <map>
 #include <queue>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/process_util.h"
 #include "base/string16.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "build/build_config.h"
 #include "content/browser/renderer_host/event_with_latency_info.h"
 #include "content/browser/renderer_host/smooth_scroll_gesture_controller.h"
+#include "content/common/browser_rendering_stats.h"
 #include "content/common/view_message_enums.h"
 #include "content/port/common/input_event_ack_state.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/common/page_zoom.h"
 #include "ipc/ipc_listener.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/base/latency_info.h"
 #include "ui/gfx/native_widget_types.h"
 
 class WebCursor;
@@ skipping 871 matching lines @@
 
 #if defined(OS_WIN)
   std::list<HWND> dummy_windows_for_activation_;
 #endif
 
   // List of callbacks for pending snapshot requests to the renderer.
   std::queue<base::Callback<void(bool, const SkBitmap&)> > pending_snapshots_;
 
   int64 last_input_number_;
 
+  BrowserRenderingStats rendering_stats_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_